Rocky: 6" Rocky Waterproof Composite Toe Work Boot R6004One of the key features of Rocky stock # R6004 is its non-metallic composite toe cap. The combination of this toe cap along with the other features of R6004 allows this style to meet the highest Astm F2413 Protective Toe footwear standards for Impact and Compression resistance. The unique combination of this toe cap's protective properties along with it being of a non-metallic material, make it ideal for areas requiring protective toe safety shoes that may have to pass through metal detectors during work. It should be noted that we have made R6004 with totally non-metallic components to aid in this regard. This is well suited for various transportation and prison oriented work areas. An additional feature of the R6004 Work Boot is its Rocky Waterproof construction. It combines a waterproof inner layer with the upper providing a barrier that helps keep water out and feet dry.